Auto-muting line-outs?

Auto-muting line-outs?

[David Henningsson]

I'm getting bug reports from downstream about auto-muting not working,
and when looking at some of them I find that the reason is that they
have a headphone + line-out combination instead of headphone + speaker.

Looking at commits such as 2a2ed0df, this is intentional. I'm not sure
what the majority of users want or expect in this case though, of course
the users who like it the way it is, aren't raising their voices. :-)

Anyway, for users that really want auto-muting for their line-outs,
would a suitable workaround to recommend them, be to tweak
user_pin_config, turning the line-out into a speaker-out, or would that
have undesirable side effects?

-- 
David Henningsson, Canonical Ltd.
http://launchpad.net/~diwic

Re: Auto-muting line-outs?

[Raymond Yau]

2010/8/3 David Henningsson <david.henningsson@canonical.com>

> I'm getting bug reports from downstream about auto-muting not working,
> and when looking at some of them I find that the reason is that they
> have a headphone + line-out combination instead of headphone + speaker.
>
> Looking at commits such as 2a2ed0df, this is intentional. I'm not sure
> what the majority of users want or expect in this case though, of course
> the users who like it the way it is, aren't raising their voices. :-)
>
> Anyway, for users that really want auto-muting for their line-outs,
> would a suitable workaround to recommend them, be to tweak
> user_pin_config, turning the line-out into a speaker-out, or would that
> have undesirable side effects?
>
>
headphone + speaker usually occur in laptop

headphone + line out occur in desktop

As HDA support multi streaming, the front panel green/pink jacks may be used
independent of the audio jacks in rear panels in desktop on some HDA codec

Re: Auto-muting line-outs?

[Mark Brown]

On Tue, Aug 03, 2010 at 09:53:45AM +0200, David Henningsson wrote:
> I'm getting bug reports from downstream about auto-muting not working,
> and when looking at some of them I find that the reason is that they
> have a headphone + line-out combination instead of headphone + speaker.

> Looking at commits such as 2a2ed0df, this is intentional. I'm not sure
> what the majority of users want or expect in this case though, of course
> the users who like it the way it is, aren't raising their voices. :-)

I'd certainly expect line outputs to stay live regardless of headphone
state - there's just too much diversity in what they could be connected
to to allow that sort of automated handling in kernel.

Re: Auto-muting line-outs?

[Raymond Yau]

2010/8/3 Mark Brown <broonie@opensource.wolfsonmicro.com>

> On Tue, Aug 03, 2010 at 09:53:45AM +0200, David Henningsson wrote:
> > I'm getting bug reports from downstream about auto-muting not working,
> > and when looking at some of them I find that the reason is that they
> > have a headphone + line-out combination instead of headphone + speaker.
>
> > Looking at commits such as 2a2ed0df, this is intentional. I'm not sure
> > what the majority of users want or expect in this case though, of course
> > the users who like it the way it is, aren't raising their voices. :-)
>
> I'd certainly expect line outputs to stay live regardless of headphone
> state - there's just too much diversity in what they could be connected
> to to allow that sort of automated handling in kernel.
>

Some of the case not handled by the driver are those laptops which equipped
with 4.1 or 5.1 internal speakers and they need auto mute more that one pair
of speakers

https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4555

https://bugtrack.alsa-project.org/alsa-bug/view.php?id=5083